#include <stdio.h>

void func(const char *file_name){
    int c;
    FILE *fptr;
    fptr = fopen(file_name,"r");
    if (fptr == NULL){
        /* Handle error */
    }
    c = getc(fptr);
    if (c == EOF){
        /* Handle error */
    }
    if (fclose(fptr) == EOF){
        /* Handle error */
    }
}